In 2016, when 27-year-old Michael Hoolickin went for a drink with friends to a local pub in Manchester, his parents were about to receive a phone call that would change their lives forever. The second case involves Matthew Falder. The National Crime Agency reveal the inside story of an investigation to uncover the identity of one of the dark web's most prolific offenders.

The cases of 23-year-old Natalie Jarvis, and talented teenage boxer Trent Warburton, who was knocked off his bike in a drugs-induced hit and run.